What Are APIs, Explained in Everyday Language If you've heard “API” and thought, “Huh?” this article is your answer to what are APIs, in plain, everyday terms. Think of them as rules that let software “ask” another system for information, like placing an order at a restaurant. You'll discover what APIs really are, how your device communicates with services, why APIs boost speed and consistency, and the four major audience-based types. The article also walks you through API styles like REST and GraphQL, plus hands-on tips to build and secure your first one. Read more: https://diligentic.com/blog/what-are-apis